Hatch cover with pneumatic seal for mobile or stationary storage tanks



FIG. 1 is a perspective view of a hatch cover with pneumatic seal for mobile or stationary storage tanks showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a hatch cover with pneumatic seal for mobile or stationary storage tanks, substantially as shown and described. 